diff --git a/packages/Sarga/API/Http/Controllers/Carts.php b/packages/Sarga/API/Http/Controllers/Carts.php
index c131cb944..7b0a2b7b5 100644
--- a/packages/Sarga/API/Http/Controllers/Carts.php
+++ b/packages/Sarga/API/Http/Controllers/Carts.php
@@ -188,7 +188,7 @@ class Carts extends CartController
      * @param \Illuminate\Http\Request $request
      * @return \Illuminate\Http\Response
      */
-    public function applyCoupon($request)
+    public function applyCoupon(Request $request)
     {
         $couponCode = request()->get('code');
         $cartRuleCouponRepository =app(CartRuleCouponRepository::class);